4 commits

Author	SHA1	Message	Date
Simon Ser	22594d3723	render/gles2: unify fragment shader ... Instead of having 3 different fragment shaders for textures and 1 more for quads, unify them all and compile different variants via a SOURCE constant. In the future, we will have more variant dimensions: pre-multiplied alpha on/off, color transformation, etc. It will become inpractical to have one file per combination. Weston has a similar approach: https://gitlab.freedesktop.org/wayland/weston/-/blob/main/libweston/renderer-gl/fragment.glsl	2022-10-27 16:37:17 +02:00
Simon Ser	30a61470f8	render/gles2: de-duplicate vertex shaders ... The vertex shaders for quads and textures are identical.	2022-10-27 16:31:49 +02:00
Simon Ser	3295243da6	render/gles2: move color uniform from quad.vert to quad.vert ... We have no use for a v_color varying. We can use the uniform directly from the fragment shader without getting the vertex shader involved.	2022-10-27 15:58:34 +02:00
Simon Ser	d75e5b7726	render/gles2: move shaders to individual files ... Instead of having a C file with strings for each shader, move each shader into its own file. Use a small POSIX shell script to convert the files into C strings (can't wait for C23 #embed...). The benefits from this are: - Improved readability and syntax highlighting. - Line numbers in shader compiler errors are easier to make sense of. - Consistency with the Vulkan renderer. - Shaders will become more complicated as we add color management features.	2022-10-26 15:08:08 +02:00